Xweather Protect
Severe weather alerting and real-time storm monitoring for all your locations worldwide, with automated multichannel alerts and all-clear notifications through the Alert API add-on.
Hail intelligence from forecast to validation
The industry's only hail forecast API, validated historical data, and advanced mapping layers. Predict threats at the asset level, alert before impact, and verify what happened after the storm.
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Best in the world
0 min
lead time for 100% of the events
0 min
warning for 95% of severe hailstorms
0 min
average lead time
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hail events with zero misses in a 2025 study in North America
A 58 million dollar problem
Hail accounts for over 50% of solar facility claim costs
For utility-scale solar, hail damage represents less than 2% of filed claims but over 50% of total claim costs, with the average solar hail claim reaching $58 million (AXIS Capital, 2024). Insurers have responded with premium increases of up to 400% in high-risk regions, sub-limits on hail coverage, and in some cases refusals to insure at all.
The risk extends beyond solar. Any organization with outdoor infrastructure, from warehouses and vehicle fleets to airports and construction sites, faces hail exposure. Standard severe weather warnings cover wide areas but cannot tell you exactly where hail will fall or how long it will last.
That gap between a general warning and precise, site-level hail intelligence is where damage, downtime, and disputed claims happen.
The cost of imprecise hail warnings
Unpredictable strike zones
Severe storm warnings cover hundreds of square kilometers. Hail is localized within a few kilometers. Without site-level forecasts, assets remain exposed to threats that regional warnings cannot resolve.
Narrow reaction windows
Hail-producing storms can intensify in minutes. Stowing solar panels, pausing outdoor operations, or moving vehicles requires lead time that generic storm warnings rarely provide.
Disputed claims, unclear exposure
After a hailstorm, insurers and asset owners often disagree on what happened and where. Without validated, location-specific sensor data on hail severity and duration, claims take longer to settle, and exposure is harder to price.
The only hail threat forecast powered by lightning intelligence
Most hail forecasts rely on radar, satellite, and standard atmospheric models, whereas Xweather's unique proprietary lightning data takes us beyond the market.
Lightning as a core signal of storm development
Xweather is the only provider that integrates lightning data directly into hail threat forecasting, combining it with radar, satellite, and advanced modeling to detect storm intensity and hail potential earlier and with greater precision.
Proven severe hail forecasting performance
Our forecast model combines lightning data from the Xweather Lightning Network with radar reflectivity and numerical weather models to forecast hail threats up to 60 minutes in advance.
A fundamentally different approach to forecasting hail risk
With this approach, we identify high-risk conditions that conventional methods miss. The result is a more accurate, more reliable hail threat forecast, validated by performance data and trusted in operational environments where decisions carry real cost.
Where hail intelligence matters most
Solar and energy
Protect solar assets before hail hits
Hail forecast alerts delivered up to 60 minutes before impact, in 10-minute intervals, within a 3 km radius of your solar assets.
Stow protocols implemented for 3 out of 4 severe storm alerts have been shown to materially reduce damage exposure and lower claims frequency (AXIS Capital).
After the storm, the historical archive confirms hail size and severity at your exact location, supporting damage assessments, warranty claims, and insurance documentation.
Insurance and risk
Validate claims with verified hail records
Access location-specific historical data on hail size, frequency, severity, duration, and intensity for any covered location.
Use validated records to assess policy exposure, price hail risk accurately, and resolve claims faster.
Archive data is available from January 2024 (US) and February 2024 (Canada, Japan, Europe, Australia).
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Create hail alerts with Xweather Protect
01
Connect
Add your assets in Xweather Protect, configure the Alert API add-on, and define an alerting buffer zone around your location.
02
Monitor
Monitor developing hailstorms with forecast polygons showing impacted areas up to 60 minutes ahead.
03
Alert
Alerts and webhook notifications fire when hail is forecast near your assets.
04
Respond
Stow panels, pause operations, or activate protection protocols using hail size, probability, and storm track data.
05
Verify
Access the historical archive to confirm hail size, severity, and duration at each location for claims and reporting.
Validation study
20-minute warning for 95% of severe hailstorms
This validation study tested the accuracy of our forecast against data from 170 independently confirmed severe hail events at commercial solar facilities.
Zero misses
Xweather Protect correctly forecast severe hail for all 170 events with zero misses.
10 minutes lead time for 100% of the events
Xweather Protect provided at least 10 minutes lead time for 100% of the events and at least 20 minutes lead time for 95% of the events.
37-minutes average lead time
The average lead time was 37 minutes with the default configuration. Extending the alert distance and forecast time window time increased the safety margin even further.
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Data to solve the hail problem
Xweather's hail threats endpoint delivers forecasts up to 60 minutes ahead in 10-minute intervals. The Alert API activates alerts on the probability of severe hail (diameter greater than 2.54 cm) within a 3 km radius of your assets.
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Validated historical hail data dating back to early 2024. Records include hail size, frequency, severity, duration, and intensity for any location. Built for insurance, claims validation, exposure modeling, and meteorological research.
Hail offering
Weather API
60+ endpoints of weather intelligence including hail threats, hail archive, lightning, severe storms, and road weather, delivered via a single RESTful API.
MapsGL
Interactive weather visualization for web, iOS, and Android. Includes eight dedicated hail map layers alongside hundreds of other weather and environmental layers.
Integrate hail intelligence into your platform
Hail threat nowcasts, historical archive data, and map layers are available through the Weather API and MapsGL. Start building with a free 30-day developer trial.